Status of e low p t trilepton analysis
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Status of e μ low-p T trilepton analysis. M.Rossi, G.Pauletta,M.Giordani Udine University. Outline. Data and MC Lepton Selection Control Regions under investigation Dilepton events Dielectron Dimuon Electron-Muon Conclusions. Data and MC. Data SUSY dilepton dataset edil0d

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Status of e μ low-p T trilepton analysis

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Status of e low p t trilepton analysis

Status of eμ low-pT trilepton analysis

M.Rossi,G.Pauletta,M.Giordani

Udine University

SUSY meeting


Outline

Outline

  • Data and MC

  • Lepton Selection

  • Control Regions under investigation

  • Dilepton events

    • Dielectron

    • Dimuon

    • Electron-Muon

  • Conclusions

SUSY meeting


Data and mc

Data and MC

  • Data

    • SUSY dilepton dataset edil0d

      • Good run list v7 no silicon

        • 224pb-1 up to February 2004

    • Dielectron events

      • DIELECTRON_CENTRAL_4 trigger

    • Dimuon events

      • DIMUON_CMUPCMUP4 trigger

    • Electron-Muon events

      • CEM4_CMUP4 trigger

SUSY meeting


Data and mc1

Data and MC

  • MC

    • Signal point ~360fb-1 (m0=100,m1/2=180,A0=0,tanβ=5,μ>0)

    • DY sexo9t (Z ll, Mll>5GeV/c2) ~5fb-1

    • ttbar (ttopel) ~170fb-1

    • WW (wtop1w) ~34fb-1

    • ZZ (multilepton) ~535fb-1

    • WZgamma (MadGraph) ~300-2500fb-1

    • bbbar (Giovanni) ~30pb-1

SUSY meeting


Lepton selection

Lepton Selection

  • High pT (>20GeV/c) CEM and CMUP selection

    • Standard top/ewk definition

  • 4-20GeV/c pT range

    • Muon ID as in CDF 7197 (Purdue)

    • Electron ID as high pT

  • CEM ID Scale Factors

  • CMUP ID Scale Factors

  • SF ET CDF note

  • 1.00 4-8GeV 7379

  • 1.03 8-20GeV 7233

  • 0.996 >20GeV 7309

  • SF PT CDF note

  • 0.85 4-20GeV 7197

  • 0.881 >20GeV 7309

SUSY meeting


Ee selection os

ee selection (OS)

1st lepton pT>10 GeV/c

2nd lepton pT>5 Gev/c

SUSY meeting


Ee selection z window os

ee selection Z window (OS)

1st lepton pT>10 GeV/c

2nd lepton pT>5 Gev/c

Z obs 3410 exp 3363

SUSY meeting


Selection os

μμ selection (OS)

1st lepton pT>10 GeV/c

2nd lepton pT>5 Gev/c

SUSY meeting


Selection z window os

μμ selection Z window (OS)

1st lepton pT>10 GeV/c

2nd lepton pT>5 Gev/c

Z obs 883 exp 878

SUSY meeting


Contron regions a la teruki

If TRILEPTON,

SIGNAL REGION

nJets < 2

nJets > 1

E

F

A

A2

A

A2

MET

10 15

G

H

I

J

G

H

15 76 106

Invariant Mass of electrons Mll

Contron Regions a la Teruki

SUSY meeting


E control regions

eμControl Regions

  • MET>15 GeV and nJET<2 (A+E)

  • MET>15 GeV and nJET>1 (A2+F)

  • MET<10 GeV and nJET<2 (G+I)

  • MET<10 GeV and nJET>1 (H+J)

1st lepton pT>20 GeV/c

2nd lepton pT>8 Gev/c

SUSY meeting


E selection

eμ selection

1st lepton pT>20 GeV/c

2nd lepton pT>8 Gev/c

SUSY meeting


E met 15 and njet 2 a e

eμ MET>15 and nJET<2 (A+E)

1st lepton pT>20 GeV/c

2nd lepton pT>8 Gev/c

SUSY meeting


E met 15 and njet 1 a2 f

eμ MET>15 and nJET>1 (A2+F)

1st lepton pT>20 GeV/c

2nd lepton pT>8 Gev/c

SUSY meeting


E met 10 and njet 2 g i

eμ MET<10 and nJET<2 (G+I)

1st lepton pT>20 GeV/c

2nd lepton pT>8 Gev/c

SUSY meeting


E 20 8 control regions

eμ (20,8) Control Regions

SUSY meeting


E selection1

eμ selection

1st lepton pT>10 GeV/c

2nd lepton pT>5 Gev/c

SUSY meeting


Conclusions

Conclusions

  • ee and μμ distributions better

    • whole spectrum and Z window

  • eμ (20,8) shows some excess in data

    • whole spectrum and Teruki control regions

  • eμ (10,5) missing something

    • maybe fakes

  • Fakes calculation is our next step

    • the machinary is there

  • Look at trilepton CR

  • Up to ~320pb-1 (shutdown 2004)

    • using CEM4_CMU4 trigger path

SUSY meeting


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